Car-coupling.



PATBNTED MAY 26, 1903.

l P. C. EWART, DECD.

M v EWAM, nxnoUTnIx GAR GOUPLING.

APPLIOATLON Hman JUNE 7.1000

2 SHEETS-SHEET 1.

l0 MODEL.

, 5mm/vbo@ warf @21 @MSM/nuja l Pk lo Nrrnn STATESv 'atented May 26, 1903.

PATENT OFFICE.

PHILO C. EWART, OF CINCINNATI, OHIO; MYRA V. EWART EXECUTRIX OF SAID PHILO C. EWART, DECEASED.

lCAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 728,888, dated May 26, 1903.

Y Application filed June '7, 1900. Serial No. 19,452. (No model.) v

i hook is provided with shoulders bs, adapted to engage ledges a2 on the bufferhead, so that To a/ZZ whom t may concern.-

Be in known that I, PHIL@ o. EWART, acm# zen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Car-Couplers, of which the following is a specilication.

My invention relates to automatic car-cou p- 1ers; and its objects are to furnish improved view of a coupler embodying my.invention attached to the end of a car; Fig. 2, a front elevation of the coupler detached; Fig. 8, a horizontal section of the coupler when not under strain with parts broken away to show the unlocking device; Fig. 4, a vertical section on line 4 4 of Fig. 3; Fig. 5, a horizontal section of the coupler in its uncoupling position; Fig. 6, a vertical section on line 6 6 of Fig. 5; Fig. 7, a horizontal section showing the coupler under strain and locked against uncoupling; Fig. 8, a side elevation of the uncoupling device, on an enlarged scale; Fig. 9, a perspective view of the uncoupling device, and Fig. lO a perspective View of the outer end of the socket for the uncoupl-ing device.

Reference-letter A denotes the b u Eer-head;`

shank is extended at b to engage springs 1),

which press the hooks to coupling positions. The pivot-hole b2 in hook B is elongated, so as to permit of a slight longitudinal movement of the hook relatively to the head. The

when the hook is drawn forward relatively to the head the shoulders b3 engage the ledges on the head, positively locking the hookr against swinging out and becoming uncou pled. When the pulling strain on the hook is relieved, the tension of springs b throws the hook back, disengaging shoulders b3 and ledges a2 and leaving' the hook free to be 6o swung back against the pressure of springs b, and so uncoupled. Although I prefer to use the shoulders b3 on the hook, they may be omitted, and the hook when under pulling strain will be held against uncoupling move- 6.5

ment by the ledge a2 on the buffer-head. In order to swing the hookback for uncoupling, the shaft D is rotatably mounted on the bufferhead and provided with a screw-cam CZ, adapted to contact with the inner edge b4 of the 7o neck of the hook, so that when the shaft D is properly rotated the edge b4 of hook B travels up the screw-face d of cam d, swinging the hook back, as shown in Fig. 5. It will be seen that when the screw-cam lirst contacts with the edge of the hook-neck its tendency is to force the hook back into its eXtreme rear position and unlock the hook in case the springs b should for any reason fail to act.

The shaftD is provided with a projection d2, 8o

adapted to engage with a stop as on the head at the mouth of the bearingor socketin which shaft D is mounted. The stop a3 consists of an inclined face a4, up which the projection d2 travels during the uncoupling rotation of 85 shaft D, thereby slightly withdrawing the shaft from its socket, and a shoulder a5, be-

,hind which the projection is drawn by the tension of springs b', thus locking the hook in its uncoupled position, as shownin Fig. 5.;

The shaft D is provided with a shoulder d8, so related to the hook B that when thehook is locked in its uncoupled positionthe rear of the neck is in close proximity to the shoulder, so .that a slight movement of `the'hook 95 outwardly will move the shaft D correspondingly, disengage projection d2 from shoulder a5, and permit the closing of the hook. The shape of the hook issuch that when thus locked in its uucoupling position its point b5 projects roo slightly into the mouth of the buffer-head. Thus it will be seen that if coupling is attempted while the hook is locked in its uncoupled position the point b5 of the hook will be struck by the incoming hook and forced back sufficiently to dislodge projection d2 and permit coupling. The operative rotation of shaft D is accomplished by means of crankshaft E engaging eye d4 therein and extending toward the side of the car, Where its handle e is accessible Without going between the cars.

I claiml 1. The combination, in a car-coupling, of a b'nerhead; a coupling -hook adapted to swing relatively to the head and capable of longitudinal movement relatively thereto, upon application of the strain; and locking elements on the hook and head, normally free from engagement, but adapted to engage upon the longitudinal movement of`one relatively to the other, to prevent swinging of the coupling-hook, substantially as and for the purpose set forth.

2. The combination, in a car-coupling, of a buffer-head; acoupling-hook havinga pivotal mounting and capable of longitudinal movement-relatively thereto, upon application of the strain; and locking elements on the hook and head, normally free from engagement, but adapted to engage upon the longitudinal movement of one relatively to the other, to prevent swinging of the coupling-hook, substantially as and for the purpose set forth.

3. The combination, in a car-coupling, of a buffer-head, a coupling-hook pivoted in the head and capable of longitudinal movement relatively thereto; yielding means pressing the hook to coupling position; and locking elements on the hook and head, adapted to engage upon the longitudinal movement of one relatively to the other, substantially as and for the purpose set forth.

4. The combination, in a car-coupling, of a buifer-head; a coupling-hook havinga pivotal mounting through a slot elongated in the direction of strain; and locking elements on the hook and head, normally free from engagement, but adapted to engage upon the longitudinal movement of one relatively to 'the other, substantially as and for the purpose set forth.

5. The combination, in a car-coupling, of a buffer-head pivotally connected with the car; a coupling-hook having a pivotal mounting through a slot elongated in the direction of strain; and locking elements on the hook and head, normally free from engagement, but adapted to engage upon the longitudinal movement of one relatively to the other, substantially as`and.for the purpose set forth.

6. The combination, in a car-coupling, of a buifer-head, a coupling-hook adapted to swing relatively to the head, and capable of longitudinal movement relatively to the head; locking elements on the head and hook adapted to engage upon the longitudinal movement of one relatively to the other, and yielding means for pressing the hook to coupling position, substantially as and for the purpose set for-th.

7. The combination, in a car-coupling, of a buier-head; a cou pling-hook havinga pivotal connection with the buffer-head through a slot elongated in the direction of the line of strain, locking elements on the head and hook adapted to. engage upon the longitudinal movement of one relatively to the other, and yielding means for pressing the hook to coupling position, substantially as and for the purpose set forth. Y

8. The combination, in a car-coupling, of a buEer-head a coupling-hook adapted to swing relatively to the head, and capable of longitudinal movement relatively to the head, yielding means for pressing the hook to coupling position; locking elements on the hook and head adapted to engage upon the longitudinal movement of one relatively to the other; means for moving the head or hook to disengage the locking elements, substantially as and for the purpose set forth.

9. The combination, in a car-coupling, of a buffer-head a coupling-hook adapted to swing relatively to the head, and capable of longitudinal movement relatively to the head, yielding means for pressing the hook to coupling position; locking elements on the hook and head adapted to engage upon thelongitudinal movement of one relatively to the other; means for moving the head or hook to disengage the locking elements; a screw-cam connection between the hook and head, and means for actuating the screw-cam to withdraw the hook, substantially as and for the purpose set forth.

IDO

IOS

l0. The combination, in acar-coupling, ofa

Vset forth.

l1., The combination, in a car-coupling, of a buffer-head a con pling-hook adapted to swing relatively to the head, and capable of longitudinal movement relatively to the head; yielding means for pressing the hook to coupling position; locking `elements on the hook and head adapted to engage upon the longitudinal movement of one relatively to the other; means for moving the head or hook to disengage these locking elements; a rotatable shaft mounted in the head, a screw-cam on the shaft, adapted to engage the hook and with- IIO IIS

adapted to engage upon the longitudinalv movement, of one relatively to the other; means for moving the head or hook to disengage the locking elements; a rotatable shaft mounted in the head; a screw-camvon the shaft, adapted to engage the hook and withdraw it; a stop on the head; a projection on the shaft adapted to engage the stop and lock the hook in its uncoupling position; a shoulder on the shaft so related to the hook as to be in contact or close proximity thereto when the hook is locked in its uncoupling position,

so that a slight movement ofl the hook will dislodge the projection from the stop; and means for rotating the shaft,gsubstantially as and for the purpose set forth.

13. The combination, in acar-coupling, of a buffer-head a coupling-hook adapt-'ed to swing relatively to the head and capable of longitudinal movement; a spring adapted to engage the shank of the h ook and press the hook to coupling position; locking elements on the hook and head adapted to engage upon the longitudinal movement of one relatively to the other; yielding means for moving thelocking elements out of engagement for swinging the hook relatively to the head, substantially as and for the purpose set forth.

14. The combination, in a car-coupling, of a buffer-head, a coupling-hook adapted to swing relatively to the head and capable of longitudinal movement; a spring adapted to engage the shank of the hook and press the hook to coupling position; shoulders b3 on the hook adapted to engage edges a2 of the buffer-head upon forward longitudinal movement of the hook relatively to the head; yielding means for moving the locking elements out of engagement, and means for swinging the hook relatively tothe head, substantially as and for the purpose set forth.

15. The combination in a car-coupling, of a buffer-head a coupling-hook adapted to swing relatively to the head; a shaft; engaging elements on the hook, head and shaft whereby rotation of the shaft engages the hook forward of the pivot and withdraws it, and means for rotating the shaft, substantially as andfor the purpose set forth.

16. The combination in a car-coupling of a buffer-head a coupling-hook adapted to swing' relatively to the head; a shaft; an engagement between the shaft and hook whereby rotation of the shaft withdraws the hook but o LJ) leaves the hook free for further withdrawal without affecting the shaft, and the shaft free to return to its inoperative position without affecting the hook; means for locking the shaft in position with the hook in uncoupling position; means on the shaft and hook whereby further outward movement of the hook beyond its uncoupling position unlocks the shaft; means for returning the shaft to its inoperative position, and means for rotating the shaft, substantially as and for thev purpose set forth.

17. The combinatiomin a car-coupling, ofa buffer-head; a coupling-hook pivoted in the head; a shaft rotatably mounted in the head; a screw-cam on the shaft engaging the shank of the hook forward of the pivot; and means for rotating the shaft, substantially as and for the purpose set forth.

18. The combination, in a car-coupling, of a buffer-head; a coupling-hook adapted to swing relatively to the head and capable of longitudinal movement relatively to the head; locking elements on the hook and head adapted to engage upon the longitudinal movement of one relatively to the other; a shaft mounted in the head; a screw-cam on the shaft adapted to engage the hook, force it back longitudinally from the position assumed under strain,

and withdraw it fromits coupling position,

and means for rotating the shaft, substantially as and for the purpose set forth.

19. The combination in a car-coupling, of a pivoted buffer-head; a coupling-hook pivoted to the buffer-head pivot; a shaft rotatably mounted in the head; a screw-cam on the shaft engaging the shank of the hook forward of the pivot; and means for rotating the shaft, substantially as and for the purpose set forth.

20. The combination, in a car-coupling, of a stem, a buHer-head pivotally connected therewith; a coupling-hook pivoted to the stem and adapted to swing relatively to the head; a shaft rotatably mounted in the head; a screwcam on the shaft engaging the shankof the hook forward of the pivot; and means for rotating the shaft, substantially as and for the purpose set forth.

21. The combination, in a car-coupling, of a stem; abuffer-head pivotally connected therewith; a coupling-hook pivoted to the stem and .adapted to swing relatively to the head; a shaft mounted to rotate in the head; a screwcam on the shaft adapted to engage the hook and withdraw it; a stop on the head; a projection on the shaft adapted to engage the stop and lock the hook in its uncoupling position; and means for rotating the shaft, substantially as and for the purpose set forth.

22. The combination, in a car-coupling, of a Y stem, a buffer-head pivotally connected therewith; a coupling-hook pivoted to the stem and adapted to swing relatively to the head; a shaft mounted to rotate in the head; a screwcam on the shaft adapted to engage the hookV IOO iii-

and withdraw it; a stop on the head; a pro- Y the projection from the stop, and means for jection on the shaft adapted to engage the stop and lock the hook in its unooupliug po-v sition; a, shoulder on the shaft arranged in close proximity to the hook, when the latter is locked in its uueoupling position,' so that a slight movement of the hook Will dislodge rotating the shaft, substantially as and for the purpose set forth. A

PHILO C. EWART. W itnesses:

GEORGE B. PARKINSON,

BRAYTON G. RICHARDS. 

